Materials Literature
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In oscillatory shear experiments, the values of the storage and loss moduli, $G^{\prime }(\unicode[STIX]{x1D714})$ and $G^{\prime \prime }(\unicode[STIX]{x1D714})$ , respectively, are only measured and recorded for a number of values of the frequency $\unicode[STIX]{x1D714}$ in some well-defined finite range $[\unicod…
The Kapitza resistance at a segregated, low-angle symmetric tilt grain boundary in β-SiC is investigated using non-equilibrium molecular dynamics simulation. In particular, we assess the role of compositional and thermal disorder on the boundary resistance for various doping scenarios. By examining the local vibration…
Amorphous hydrated complexes of the polyelectrolytes poly(styrene sulfonate) (PSS) and poly(diallyldimethylammonium) were doped with the spin-5/2 ion Mn(2+). X-band electron paramagnetic resonance (EPR) measurements of the Mn(2+) spins within these stoichiometric polyelectrolyte complexes (PECs) revealed an octahedral…
The reliable running of the transformer is extremely important for the electric system. However, transformers will inevitably suffer various impacts, such as short-circuit current and mechanical vibration, which lead to permanent winding deformation, such as inner short circuit, distortion and bulge, lead and winding…
Interest in the use of intelligent packaging systems for food products has increased in recent years. Intelligent packaging systems are those that monitor the condition of packaged foods to give information regarding the quality of the packaged food during transport and storage. The potential of HEC/PANI film as pH in…
This paper introduces the Distributed Transformer Monitoring System using Field Programmable Gate Array based technology integrated with wireless communication modules and its utilization for a smart grid. It consists of network of sensors and energy meters. The whole architecture and the hardware & software flow of t…
The rise of non-linear type of loads, industrial automation has drawn attention towards mitigation of power quality problems and lead to power quality awareness. In this context Shunt active filters efficiently resolve problems caused by current harmonics, improve power factor and compensate reactive power. This paper…
Aniko M Solyom, Joseph M Betz, Paula N Brown, Anton Bzhelyansky, Nicole Chrisafis, Milda E Embuscado, Heather Figore, Holly E Johnson, George Joseph, David
Alexander A Kazakov; Nonmetallic Inclusions in Steel – Origin, Estimation, Interpretation and Control, Microscopy and Microanalysis, Volume 22, Issue S3, 1 July
Artificial intelligence has been used in electrical power industry for many decades. An important application may be in the area of incipient fault diagnosis and condition assessment of power equipment. As power transformer is one of the most valuable assets in power network, it is vital to determine its defects befor…
Technological processes are developed to fabricate composite materials based on B83 babbit using hot pressing of a mixture of powders in the presence of a liquid phase. As a result, the structure of the matrix B83 alloy is dispersed, the morphology of intermetallic phases is changed, and reinforcing micro- and nanosiz…
Core Ideas Phosphate speciation determines its bioavailability in soils. Phosphate molecular speciation changes occur upon organic‐acid‐promoted dissolution. Results imply that phosphate in acid soils preferentially associated with Fe(III) oxides. Organic‐acid‐promoted dissolution of phosphate is a primary mechanism f…
In high voltage power systems, harmonic content is measured at low voltage through the instrument transformers on the power grid. In this paper, a system for measuring the behavior of commercial current and voltages transformers under distorted waveforms is described. It generates programmable arbitrary waveforms and…
The main purpose of this paper is to explore the impact of applied contact pressure, surface roughness and elastic modulus on the AC tangential breakdown strength (BDS) of dry and wet-mate solid-solid interfaces both experimentally and theoretically. Experiments were performed using samples made of cross-linked polyet…
Thermally sprayed insulating ceramic coatings can be utilized in conditions where polymers are inapplicable. The coatings exhibit a special lamellar microstructure with interfaces and some defects (e.g. voids, cracks) in between. The aim of this study was to analyze the relationship between the microstructural feature…
The activity concentrations of 226Ra, 232Th, 40K and 235U in soil samples from a bauxite ore deposit site in Western Cameroon were determined by gamma spectrometry using a Broad-Energy Germanium (BEGe6350) detector. The average activity concentrations of 226Ra, 232Th, 40K and 235U were found to be 124.8 ± 58.1, 157.3…
Summary Interpenetrated Polymer Networks (IPNs) were produced from the simultaneous UV‐photocuring of Bisphenol A propoxylate diacrylate (BPA‐PDA) and 3,4‐epoxycyclohexylmethyl 3,4‐epoxycyclohexanecarboxylate (ECH) under a polychromatic source. Atomic Force Microscopy (AFM) and Transmission Electron Microscopy (TEM) w…
Composite membranes consisting of polyvinyl alcohol and disperse particles of polyantimonic acid with different ratios of components were studied. Processes related to the relaxation and proton transport in a heterogeneous system were considered. The proton transport in the membranes was shown to occur both within the…
BACKGROUND: In obstructive sleep apnea (OSA), occlusion of the upper airway by soft tissue causes intermittent hypoxemia and can have serious sequelae. A novel implantable medical device for OSA is composed of a linear silicone elastic element held in an extended state by a bioabsorbable external sheath. The implant i…
The structure of GdFe 3 (BO 3 ) 4 single crystals has been studied by X-ray diffraction at 293 and 90 K. The crystals are grown from a flux in the Bi 2 Mo 3 O 12 –B 2 O 3 –Li 2 MoO 4 –Gd 2 O 3 –Fe 2 O 3 system. The results of chemical analysis and structural study show that these crystals contain bismuth as an impurit…